2017
DOI: 10.3847/1538-4357/836/1/38
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Galaxy–Galaxy Weak-lensing Measurements from SDSS. I. Image Processing and Lensing Signals

Abstract: We present our image processing pipeline that corrects the systematics introduced by the point-spread function (PSF). Using this pipeline, we processed Sloan Digital Sky Survey (SDSS) DR7 imaging data in r band and generated a galaxy catalog containing the shape information. Based on our shape measurements of the galaxy images from SDSS DR7, we extract the galaxy-galaxy (GG) lensing signals around foreground spectroscopic galaxies binned in different luminosities and stellar masses. We estimated the systematic… Show more

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Cited by 25 publications
(26 citation statements)
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“…A number of factors may affect the estimates of the halo mass. As a test, we repeat our analysis using an independent weak-lensing shear catalog obtained by Luo et al (2017) from the Sloan Digital Sky Survey (SDSS) DR7 (Abazajian et al 2009) imaging data using a totally different method (see Appendix). As shown in Figure 5, the results obtained from the SDSS data agree well with those from the DE-CaLS data.…”
Section: Tests Of Uncertaintiesmentioning
confidence: 99%
See 1 more Smart Citation
“…A number of factors may affect the estimates of the halo mass. As a test, we repeat our analysis using an independent weak-lensing shear catalog obtained by Luo et al (2017) from the Sloan Digital Sky Survey (SDSS) DR7 (Abazajian et al 2009) imaging data using a totally different method (see Appendix). As shown in Figure 5, the results obtained from the SDSS data agree well with those from the DE-CaLS data.…”
Section: Tests Of Uncertaintiesmentioning
confidence: 99%
“…As an independent test, we also use a different shear catalog (Luo et al 2017) based on SDSS DR7 (Abazajian et al 2009). The difference between the two samples is twofold.…”
Section: Appendix A: Measurements With Sdss Shear Catalogmentioning
confidence: 99%
“…Finally, we also perform galaxy-galaxy lensing measurements for the galaxy samples. Following Luo et al (2017), from the galaxy shear measurements we obtain the excess surface density (ESD) profile for each galaxy sample,…”
Section: Galaxy Clustering Measurementsmentioning
confidence: 99%
“…In a recent study, Luo et al (2017) used the background galaxies in the SDSS DR7 to measure ESDs around lens galaxies that are separated into the same luminosity bins as adopted here. The circles with error bars shown in Fig.…”
Section: Constraints On F σ 8 and Bmentioning
confidence: 99%